@SunSun
I did bother read it.
We didn't get ANY explain on: why witches are so hated, how is magic still relevant, if they have teleportation, gun , macig jamming mashine, are other kingdoms don't conduct witch hunts, if so why all the witches didn't leave this kingdom earlier, such advanced technologies are not earned overnight, and political turmoil can be felt much earlier.
We got nothing on mc, except that he like his teacher witch, and his motivatio is shown at the end of the chapter, revenge,
and it wouldn't be such a problem, if author just explain at the very beginning, witches are hated because ... (they don't like chocolate ice cream or somethink).
And you wrong about, horrors of concentration camps, there were reports delivered by Polish government, Polish military intelligence, and Jews who managed to escape, to the governments of USA and Britain, what's going on there, but they were ignored.